袁丽芳　谢寿安　刘绥鹏　吕淑杰　郭新荣　宋晓斌

(西北农林科技大学，杨凌，712100)



花椒窄吉丁成虫触角感器超微结构1)

袁丽芳谢寿安刘绥鹏吕淑杰郭新荣宋晓斌

(西北农林科技大学，杨凌，712100)

采用扫描电子显微镜对花椒窄吉丁(Agriluszanthoxylumi)雌雄成虫触角进行观察，明确了花椒窄吉丁雌雄成虫触角感受器的类型、数量和分布位置及两性感受器的差异性。结果表明：在雌雄成虫触角上均发现6类17种感受器：3种毛形感器、4种刺形感器、7种锥形感器、1种钟形感器、1种芽形感器和1种特殊感器。此外在雄虫触角上还发现Böhm氏鬃毛。花椒窄吉丁触角感受器的分布位置相对稳定，触角两侧面主要分布毛形感器，背腹面主要分布毛形感器和刺形感器。触角第Ⅳ-Ⅺ节端部有1个凹窝，凹窝内主要分布锥形感器，凹窝旁的凹陷中有1个锥形感器簇，但第Ⅹ-Ⅺ节的锥形感器簇不明显。雌雄成虫的6类17种感器在分布位置上无明显差异，但是触角锯齿部分的或第Ⅳ-Ⅺ节端部锥形感器在数量上雄虫显著多于雌虫。

花椒窄吉丁；触角；感器；扫描电镜；超微结构

We observed the sensilla on the antenna ofAgriluszanthoxylumiby using scanning electron microscopy to know the ultrastructure, type, number, distribution of sensilla on the antenna ofAgriluszanthoxylumi, and the differences of sensilla between male and female. The internal and external sides of the antenna have sensilla trichodeas, sensilla trichodeas and sensilla chaeticas were distributed over segmental venter and the back side. There is a fossa on the apex of every flagellomerefrom fourth to eleventh, and sensilla basiconicas were mainly distributed over it. Sensilla basiconicas cluster in the sunken place, where is the fossa, but the sensilla basiconicas cluster is not obvious on the tenth and eleventh flagellomeres. There are 6 types (17 kinds) of sensilla on the antenna of male and female including 3 kinds of sensilla trichodeas, 4 kinds of sensilla chaeticas, 7 kinds of sensilla basiconicas, 1 kind of sensilla campaniformia, 1 kind of sensilla gemmformium and 1 kind of unusual sensilla, and Böhm bristles were on the antenna of male. The distribution of sensilla is relatively stable, the 6 types of sensilla have no difference in distribution between male and female adults, but the number of sensilla basiconicas on apex of antenna of the male is significantly more than the number of the female.

昆虫敏锐的嗅觉依赖于触角感受器对外界刺激和内部神经系统的调控，以及对内外化学信号的感受识别[1]，在昆虫的取食、交配和寄主定位等行为选择中具有重要意义。

目前对昆虫触角感器的研究主要集中在鞘翅目、鳞翅目、直翅目、同翅目、半翅目、膜翅目、双翅目和缨翅目[2-4]。鞘翅目中对天牛科、小蠹科、金龟科、步甲科等研究的较多[5]，吉丁虫是重要的林木钻蛀害虫，但是对其触角感器的研究较少。……